It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
Bats sleep 18-20 hours per day.
5
Cows can sleep standing up, but they can only dream lying down.
745
The head of a jellyfish is called the "Bell."
6
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
The elephant brain weighs about 6,000g.
274